diff --git a/DeDRM_plugin/ineptepub.py b/DeDRM_plugin/ineptepub.py
index 8d88733..f4665b2 100755
--- a/DeDRM_plugin/ineptepub.py
+++ b/DeDRM_plugin/ineptepub.py
@@ -311,7 +311,7 @@ def _load_crypto_pycrypto():
             total = 0
             for byte in bytes:
                 total = (total << 8) + byte
-            return total
+            return long(total)
 
         def decrypt(self, data):
             return _PKCS1_v1_5.new(self._rsa).decrypt(data, 172)